An improved version of the ScrapBook AutoSave addon, with some extra features.
1. A regular expression can be specified so that URLs matching it aren't captured.
2. Captured pages are arranged in two-levels of directories: months and days, instead of just days.
3. Option to suppress error alerts when auto-saving.
4. URLs already captured in the current browser session aren't captured again.
You obviously need to have either ScrapBook or ScrapBook Plus installed before installing this addon. You must also make sure the original AutoSave addon has been uninstalled. Don't enable this addon and the original AutoSave addon at the same time!